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  <h1 class="topictitle1">在生产环境开启或关闭日志备份开关</h1>
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    <h4 class="sectiontitle">操作步骤</h4>
    <ol>
     <li><span>登录TiUP节点。</span></li>
     <li><span>执行以下命令开启或关闭日志备份开关（“172.0.0.0:80”为PD节点的IP和端口，“local:///test/bkpbinlog0000/”为存放日志备份文件的目录绝对路径，用户请根据实际情况输入）。</span><p></p>
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       <img src="public_sys-resources/note_3.0-zh-cn.png"><span class="notetitle"> </span>
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         <li>请确保在TiUP、TiKV节点上（如果TiDB集群下存在TiFlash节点，也包括TiFlash节点），TiDB集群具有存放日志备份文件的目录路径的读写权限。</li>
         <li>打开日志备份开关前，需确保存放日志备份文件的目录在TiUP、TiKV（如果TiDB集群下存在TiFlash节点，TiFlash节点的此目录绝对路径也需要一致）节点的绝对路径一致且该目录为空。</li>
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       <li>开启日志备份开关。<pre class="screen">tiup br log start --task-name=pitr --pd <em>172.0.0.0:80</em> --storage <em>"local:///</em><em>test/bkpbinlog0000</em><em>/"</em></pre></li>
       <li>关闭日志备份开关。<pre class="screen">tiup br log stop --task-name=pitr --pd <em>172.0.0.0:80</em> </pre></li>
      </ul> <p></p></li>
     <li><span>执行以下命令查询日志备份开关当前状态（<strong><em>172.0.0.0:80</em></strong>为PD节点的IP和端口）。</span><p></p><pre class="screen">tiup br log status --task-name=pitr --pd <em>172.0.0.0:80</em> </pre> <p></p></li>
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